前言：如何用C#获取硬盘的序列号？C#获取硬盘序列号的代码方法可参考如下方法

 private void Frm_Main_Load(object sender, EventArgs e)
        {
            //创建ManagementObjectSearcher对象
            ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
            String strHardDiskID = null;//存储磁盘序列号
            //调用ManagementObjectSearcher类的Get方法取得硬盘序列号
            foreach (ManagementObject mo in searcher.Get())
            {
                strHardDiskID = mo["SerialNumber"].ToString().Trim();//记录获得的磁盘序列号
                break;
            }
            label1.Text = "硬盘序列号: "+strHardDiskID;//显示硬盘序列号
        }

运行结果：